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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9011d1960b5f328285fcae7a0a374ca927ff299dec689be866aaee5cb149c82f' 
  AND token = 'SC7IOfG0llSK0GgRJ0l/yYsSsdl8xgUVKa+zI2D8x0k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}